Răspuns:
-calculez moli O2
niu=V/Vm= 44,8l/22,4 l/mol= 2 mol
- deduc moli si masa de KClO3 si KCl ,din ecuatia chimica
2mol.................2mol......3mol
2KClO3-----> 2KCl + 3O2
x...........................y..............2mol
x=y= 2x2/3mol= 4/3mol
M,KCl= 74,5 g/mol m=niuxM= 4/3X74,5g=99,3 g
M,KClO3= 122,5g/mol m= 4/3x122,5g=163,3g
Explicație: